KA4: fertilisers and their environmental impact

Question 1

what are 3 natural fertilisers

Answer 1

compost
animal manure
green manure

Question 2

describe the difference between animal manure and green manure

Answer 2

the difference between animal and green manure is that animal manure is made from urine and faeces of farmed animals but with green manure is remains of plants farmer grow plants, such as clover, in a field before ploughing it in, plants such as clover can make their own.

Question 3

what is a environmental impact of fertilisers

Answer 3

when it rains fertilisers can be washed out of fields and into freshwater ecosystems

Question 4

what is eutrophication

Answer 4

eutrophication is a natural process that results from accumulation of nutrients such as nitrates in lakes or other bodies of water.

Question 5

what effects does eutrophication have on biodiversity on the water

Answer 5

eutrophication decreases biodiversity of fresh water ecosystems because agal blooms and oxygen levels in the water decrease causing the death of animals